Use it precisely as directed by your physician. Until the infection has cleaned up, it is often used once or twice a week for several months. You should as much as possible file down the infected nail sections before using nail lacquer for the first time. If required, you can file the nail before each application, but avoid using the same nail file on healthy nails to avoid spreading the infection. Use the provided swabs to clean the nail(s) after filing. After that, you can uniformly apply the Loceryl Nail Lacquer to the nail surface by dipping the applicator into the lacquer bottle (s). After each use, clean the applicator with the supplied swabs.